1Chr 4:18

“And his wife the Judahitess Caleb’s wife, who was born of Judah. Jered, the father of Gedor, etc. the leaders of the cities, as it is written in Josh. (15:56): “and Jokdeam and Zanoah...,” (v. 58): “Halhul, Beth Zur, and Gedor,” (v. 36): “Jarmuth and Adullam, Soco and Azekah.” And these are the sons of Bithiah the daughter of Pharaoh The “vav” separates between the sons of the Judahitess and the sons of Bithiah. whom Mered married Caleb is Mered, who rebelled (שֶׁמָרַד) against the counsel of the spies, and so is the manner of the genealogy, that even for one, he says, “the sons of,” like (verse 15): “and the sons of Elah: Uknaz.””

“And his wife Jehudijah - The Targum considers the names in this verse as epithets of Moses: "And his wife Jehuditha educated Moses after she had drawn him out of the water: and she called his name Jered, because he caused the manna to descend upon Israel; and Prince Gedor, because he restored the desolations of Israel; Heber also, because he joined Israel to their heavenly Father; and Prince Socho, because he overshadowed Israel with his righteousness, and Jekuthiel, because the Israelites waited on the God of heaven in his time, forty years in the desert; and prince Zanoah, because God, on his account, had passed by the sins of Israel. These names Bithiah, the daughter of Pharaoh, called him by the spirit of prophecy, for she became a proselyte; and Mered took her to himself to wife: he is Caleb, and was so called because he opposed the counsel of the spies." - T. A similar explanation is given by Jarchi.”

“Jehudijah--"the Jewess," to distinguish her from his other wife, who was an Egyptian. This passage records a very interesting fact--the marriage of an Egyptian princess to a descendant of Caleb. The marriage must have taken place in the wilderness. The barriers of a different national language and national religion kept the Hebrews separate from the Egyptians; but they did not wholly prevent intimacies, and even occasional intermarriages between private individuals of the two nations. Before such unions, however, could be sanctioned, the Egyptian party must have renounced idolatry, and this daughter of Pharaoh, as appears from her name, had become a convert to the worship of the God of Israel.”

“And his wife Jehudijah,.... Another wife of Ezra; or, according to Kimchi, of Mered; a Jewess, as the word is by some rendered, to distinguish her from another wife, an Egyptian, in the latter part of the verse: bare Jered the father of Gedor, and Heber the father of Socho, and Jekuthiel the father of Zanoah; who were princes, as Jarchi seems rightly to observe; of several cities of these names in the tribe of Judah, as of Gedor, see Jos 15:58, of Socoh, Jos 15:35, of Zanoah, Jos 15:34, the Targum interprets the names of all these men of Moses, whom Pharaoh's daughter brought up; and so other Jewish writers (a), into which mistake they were led by what follows: and these are the sons of Bithiah, the daughter of Pharaoh, which Mered took; that is, to wife; this Mered was one of the sons of Ezra, Ch1 4:17 the Targum, and other Jewish writers (b), say this was Caleb, called Mered, because he rebelled against the counsel of the spies; but this contradicts their other notion of Jehudijah, or Bithiah, Pharaoh's daughter, whom he married, the one who brought up Moses, since Moses was elder than Caleb; but Bithiah, whom Mered married, was not a daughter of Pharaoh king of Egypt, but of an Israelite of this name; her sons are supposed to be those in the latter part of Ch1 4:17. (a) T. Bab. Megillah, fol. 13. 1. Vajikra Rabba, sect. 1. fol. 146. 3. (b) T. Bab. Sanhedrin, fol. 19. 2. & Megillah, fol. 13. 1.”